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H. A. PARK WINDOW SCREEN Filed March 27, 1922 2 Sheets-Sheet 1 Henry A. PM'K INVENTOR J of ATTORNEY my 11, :1 m m H. A. FAWN WINDOW SCREEN Filed March 27, 1922 2 Sheets-Sheet 2 w! I (F WWW WITNESS:

ATTORNEY lift tlltl tllll till " obj ectthe it l it 1, i

HENRY A. Phil-tit, T5 hfllU'llltf RUANUE, VIRGINIA.

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To all whom it may concern.

Be it known that T, HENRY it. PARK, a citizen of the United States, residing at South Roanoke, in the county of Roanoke and State of Virginia, have invented new and useful Improvements in Window Screens, of which the following is a specification.

This invention relates to building construction, particularly to screens for the ex clusion of flies and other insects and has for its object the provision of a novel screen structure designed for associatioh with a window, the.construction being such that the screen will automatically adapt itself to variations in the widths of the windows, depending upon the different makes thereof.

It is well known in the art that windows supposed to be of same size vary materially depending upon the company or manufacturer making the window frame and casing, the variation often amounting to as much as a half an inch or more. It is therefore apparent that if a screen be made of stock size totit a window of a so--called stock size discrepancies in the dimensions will materialize so that the screen will not always fit. It is also highly desirable that the screen be slidably mounted so that it may be pushed up in case it is necessary to shake out a rug or the like or in case it is necessary to have access to the exterior for any other reason. With these facts in view T have designed the present invention which has for its essential rovision of a screen which will automatically adjust itself to various widths of window openings, means being moreover provided whereby the screen may be removed entirely when such action may be found expedient.

An additional object is the provision of a device of this character which will be simple and inexpensive in manufacture and installation, highly efficient in use, durable in service and a general improvement in the art.

With the above and other objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which:

Figure 1 is a front elevation of a window equipped with my screen,

Figure 2 is a cross sectional view with the screen in normal position,

Figure 3 is a similar view with the screen in partially removed position and Figure t is a longitudinal sectional view showing the spring mounting for the rail members of the screen.

lteferring more particularly to the drawings the letter A designates the sides of a window casing having the usual blind stop 18, parting strip G and trim D. In carryin out my invention it provide a pair of tracr members which may be formed of any suitable length and cross sectional configuration and which are secured at the confronting sides of the Window casing upon the inside stop or the blind stop.

The screen proper consists of a rectangular, frame 11 of wood or metal as may be preferred covered by wire mesh 12. The opposite side edges of this frame are formed with longitudinally extending grooves or recesses 13 within which are slidably mounted rail members 14: which are of cross sectional configuration to engage upon the track members 10 and which are formed of sheet metal bent as disclosed to provide flanges 15 which engage against opposite sides of the track members 10. The rail members 1a are formed with transverse slots 16 which engage upon pins 17 extending transversely of the frame 11 and which operate to limit the outward movement of the rail members under the influence of coil springs 18 which are located within recesses 19 in the frame and which engage against the inner edges of the rail members.

The lowermost rail of the frame 11 is formed with a fingerhold 20 or may be provided with a finger grip secured externally thereupon, as may be preferred which is for the purpose of providing means whereby the operator may raise and lower the screen. Secured upon one side member of the frame 11 is a handle 21 while mounted upon the other side is a handle 22 which is of ill-shape and which has its arms 23 extending slidab-ly through the associated side of the frame and secured to the adjacent rail member i l.

in placing the screen in position, the operator holds the handle 21 in one hand and pulls upon the handle 22 with the other hand to compress the springs 18 so that both of the rail members M will be disposed immediately against the sides of the frame '11. (The rail memberfthat is the one opposite that provided with the handle 22 is disposed against one of the tract; members tit) 10 and the screen frame 11 is then moved moved freely up and down within the window casing. When it is desired to remove the window screen, it 1s merely necessary that the operator grasp the handle 21 in one hand and that he pull upon the handle 22 with the other hand to retract or compress the springs 18 whereupon one of the rail members 14 will be out of engagement with the associated track member 10. The screen may then be removed from the window casin with the utmost ease.

- lVhile I have shown and described the use of track members it is to be noted that their employment isnot vitally necessary as for instance I may eliminate them and place the screen directly beneath the lower sash or above the upper sash depending upon which sash is open, the usual guides that is the inner blind stop and the parting strip operating to retain the screen in position with its upper or lower edge engaged by whichever sash is open. This arrangement is not illustrated as it is so obvious that it may be easily carried out with a high degree of success.

From the foregoing description and a study of the drawings it will be apparent that I have thus provided a simply constructed and consequently inexpensive window screen which by virtue of the springs used in conjunction with the rail members will permit the screen to adapt itself for association with windows of different widths, no ad ustment being necessary at any time. Owing to the simplicity of the construction and the fewness of the parts it is apparent that there is nothing to get out of order and that the device should have a long life and satisfactorily perform all the functions for which it is intended.

While I have shown and described the preferred embodiment of the invention I desire to have it understood that I reserve the right to make such changes in the form constructmn and arrangement of parts as WllldlOt depart from the spirit of the invention or the scope of the subjoined claim.

Ilaving thus described my invention I claim:

In combination with a window frame, guide strips mounted upon the confrontin sides of the frame, a screen frame formed 1n its opposite edges with channels and with sockets communicating therewith, bearing members slidably mounted within the channels in the screen frame and embracingly engaging said guide strips, coil springs fitting within said sockets and bearing against the inner edges of said bearing members for forcing the same outwardly. a stationary handle carried by one side of the screen frame, a handle member secured to the other bearing member and slidable through the adjacent side of the screen frame, and means for limitin outward movement of the bearing mem ers, each of said bearing members being formed from a single piece of resilient metal bent at its longitudinal center and having its major portion jambed together with its free edges extended outwardly and rolled to engage opposite sides of the guide strip.

In testimony whereof I afiix my signature.

HENRY A. PARK. 

